The film was officially announced on 16 October 2023 with an announcement teaser.[6]Principal photography commenced in February 2024, with filming taking place in Kolkata. The soundtrack and background score were composed by Indraadip Dasgupta, with the lyrics penned by Srijato. The screenplay of the film was written by Aritra Banerjee, while the dialogues were by Arnab Bhaumik, with cinematography handled by Gopi Bhagat and editing by MD Kalam.[7]
During the promotion of Kachher Manush (2022), in an interview it was revealed by Pathikrit Basu that he was eager to direct Mithun Chakraborty in a film for a long time.[17][18] He had previously mentioned his admiration of Chakraborty's work, noting the actor's films Mrigayaa (1976) and Tahader Katha (1992).[19] During the post-production of Basu's next Dabaru (2024), Soham Chakraborty's production house Soham's Entertainment signed him to direct a film for the studio. Then both Soham and Basu chose a short story named Dolgobindo Babur Chashmah written by Debarati Mukhopadhyay, which itself was a part of Mukhopadhyay's book Nirbachito 42. Both of them narrated the script to Mithun Chakraborty in July 2023. After making some changes in the script as per his instructions, Chakraborty agreed to sign the film.[20]
The film's official announcement poster was released on 16 October 2023,[21] having Mithun Chakraborty's voice reciting some lines from Rabindranath Tagore's devotional poem Bhakti Bhajan, in which the film's title was revealed to be Shastri.
Pre-production
Surinder Films and Creative Solution Pvt Ltd were revealed to be the co-producers of the film in November 2023. Both Soham Chakraborty and Pathikrit Basu chose Indraadip Dasgupta as the music director of the film.[22] Cinematographer Gopi Bhagat was included as a part of the crew members. Pathikrit Basu retained some of the crew members from his previous films, which included screenwriter Aritra Banerjee,[23][24] and editor MD Kalam both of whom worked with him in Dabaru, and dialogue writer Arnab Bhaumik,[10] who worked with him in Kachher Manush. Both Banerjee and Bhaumik felt that one of the main challenges was spending a month to come up with the idea for the interval and climax sequence in a specific manner, where Mithun Chakraborty would be portrayed as a cool demeanor and also would have been observed to perform a high-octane action sequence respectively;[25][26] and also setting the character to be more interesting, a contrast from Chakraborty's films. They added that Chakraborty will be also felicitated in the film through some memorable dialogues delivered by himself from his previous blockbusters Guru (2003), MLA Fatakeshto (2006), Abhimanyu (2006), Tulkalam (2007) and Ami Subhash Bolchhi (2011).
Prior to the commencement of the first schedule, the team constructed a set at the NT-1 Studio in Kolkata, where major portions were being planned to be predominantly shot there Test shoots for the film took place in late January 2024 at Chennai. Prominent make-up artist Somnath Kundu designed the looks and character sketches for Mithun Chakraborty.[27]
Casting
In October 2023, Debashree Roy was revealed to be the female lead opposite Mithun Chakraborty, reuniting with him after 16 years since Tiger (2007),[28][29][30][31] despite working in Shukno Lanka later where they were not observed to be a pair.[32] That October month, Rajatava Dutta was reported to be a major part of the film,[33][34] marking his 9th film with Chakraborty after Le Halua Le (2012).[35][36][37] Besides, Soham Chakraborty was also revealed to play the role of an astrophysicist in the film, promising that Pathikrit Basu would create a new kind of magic with the entire starcast. In January 2024, Sauraseni Maitra was reported to be a part of the film, pairing up with him.[38][39] The same month, other cast members were revealed officially by the makers including Kaushik Sen (in his second collaboration with Basu after Dabaru), Anirban Chakraborty and Saswata Chatterjee in a pivotal roles; with Ambarish Bhattacharya, Kanchan Mallick and Abhijit Guha in a cameo appearances. Rumour was that Kharaj Mukherjee might be seen in a vital role opposite Chakraborty, but it proved wrong when he denied the information.[40][41]
Filming
The mahurat puja for the film held on 31 January 2024[42] and Principal photography commenced on 1 February in Kolkata.[43] During an early schedule on 10 February, Mithun Chakraborty suffered severe chest pain during the shooting and nearly collapsed.[44] He was admitted into the ITU of Apollo Gleneagles Hospital off EM Bypass at around 10:30 am and later underwent MRI and was treated by a neuromedicine specialist.[45][46] There Prosenjit Chatterjee,[47]Dev,[48][49][50]Raj Chakraborty,[51][52]Samik Bhattacharya and also the cast members from Shastri including Debashree Roy,[53] Soham Chakraborty, Pathikrit Basu and Rajatava Dutta came to visit him. Basu further divulged that Mithun Chakraborty also discussed the things he wanted to do, once he is back on the sets, despite his illness.[54][55][56] Praising Chakraborty's dedication to acting, Basu added that while lying in the hospital bed, Chakraborty till then discussed with Basu about the shooting being cancelled due to his sudden illness.[57][58][59]
After being discharged on 12 February,[60] Mithun Chakraborty joined the cast members during the second schedule of the film on 19 February.[61][62] On 22 February, director Madhur Bhandarkar came to meet Chakraborty also visiting the sets of the film.[63][64][65][59] According to cinematographer Gopi Bhagat, a set resembling an ashram was constructed for the of devotional workplace of Shastri where devotionally people would gather to meet him, and where most of the film's second half is set. On that month, Saswata Chatterjee joined the film's shooting schedule. The song "Dhangkurakur Taak" featuring Chakraborty, Soham Chakraborty and Maitra was filmed at this schedule on the premises of Behala Debdaru Fatak Club[66] on 1 March 2024. Afterwards, the team moved to Nonapukur for filming a brief schedule mainly with Mithun Chakraborty, Debashree Roy, Anirban Chakraborty and Ayush Das. This schedule concluded on 10 May 2024.[70]
After a brief break, a major sequence was filmed featuring Chakraborty, Rajatava Dutta and Soham Chakraborty at the NT-1 Studio on 23 May 2024.[67] A week later, the team commenced filming a major action sequence of the climax between Mithun Chakraborty and Soham Chakraborty.[68] By the end of the month, it was reported that only 20 days of shooting is to be completed, with scenes featuring Mithun Chakraborty to be canned within 15 days.[69] Some sequences featuring Soham Chakraborty and Sauraseni Mitra were shot at Salt Lake. Some major action sequences featuring Mithun Chakraborty were shot in this schedule, with some indoor sequences between Kaushik Sen and Chakraborty and was completed on 4 July 2024, which meant that principal photography has been wrapped.[70][71]
Post production
Post-production began on mid-June 2024, with Mithun Chakraborty dubbing his portions for the film first,[72] after his commitments for filming Santan (2025).[73] The same month, Debashree Roy and Rajatava Dutta dubbed their respective portions.[74]
On 1 February 2024, a poster that revealed the film's official release date was unveiled by the makers. The first look poster was released on 7 September on the occasion of Ganesh Chaturthi.[75][76][77] A motion poster was released on 17 September featuring Mithun Chakraborty and Soham Chakraborty who symbolize the rivalry between astrology and astrophysics respectively.[78] On 23 September, the film's trailer was released with a trailer launch event at PVR Mani Square.[79][80]
Suparna Majumder of Sangbad Pratidin reviewed the film and wrote "No one else could have played this character better than Mithun." She praised the acting, the chemistry and emotions between the lead but criticized the unnecessary songs.[85][86][87]
Debolina Ghosh of Ei Samay rated the film 3.5 out of 5 stars and praised Pathikrit's direction, Mithun's performance, acting of the other cast, the music and the cinematography.[88]
Debarshi Bandyopadhyay of Anandabazar Patrika rated the film 7 out of 10 stars and wrote "The film depicts a battle between astrology and logic." He praised the acting of the whole cast. He said Mithun was the best choice for this role but his eyes were not expressive enough at certain instances.[89]